I know a Mastodon user can create a new post by mentioning a Lemmy community, but I believe it is just a text post

Here was an example I found of this:
https://lemmy.world/post/82145

Does anyone know if it is possible to create a post in Lemmy via Mastodon that is a link to somewhere else such as a website?

I suppose I could just put the link in the body of the text post but a direct link would be cool, if possible